/Engine/Source/Runtime/Core/Public/ProfilingDebugging/TraceAuxiliary.h
Callback whenever a trace is started
DECLARE_TS_MULTICAST_DELEGATE_TwoParams ( FOnTraceStarted, [FTraceAuxiliary::EConnectionType](API\Runtime\Core\ProfilingDebugging\FTraceAuxiliary\EConnectionType) TraceType, const [FString](API\Runtime\Core\Containers\FString) & TraceDestination )